Gaseous fuel



UNITED STATES PATENT OFFICE.

JAMES R. ROSE, OF EDGEWORTH, PENNSYLVANIA, AND JOHN HARRIS, OF LAKEWOOD,

OHIO, ASSIGNORS '10 CARBO-OXYGEN COMPANY, OF PITTSBURGH, PENNSYLVANIA A CORPORATION OF DELAWARE.

GASEOUS FUEL.

No Drawing.

T 0 (ZZZ whom it may concern.

Be it known that we, (1) JAMES R. Rose, (2) JOHN HARRIs, citizens of the United States, residing at (l) Edgeworth, (2) Lakewood, in the county of (1) Allegheny, (2) Cuyahoga, and State of (1) Pennsylvania, (2) Ohio, have invented a certain new and useful Improvement in Gaseous Fuel, of which the following is a full, clear, and exact description.

This invention relates to gaseous fuel which is particularly useful for the purpose of producing a concentrated flame having a high temperature and capable of doing extremely fine work in the cutting of metals. A flame of this character is requisite for use in blowpipes with carbographs and for the cutting of steel such as is used in die work and Ifor the trimming of the edges of armor plate as at present constituted. c

We obtain a gas having the above desirable characteristics by mixing with hydrogen, as a combustible base, methane and illuminating gas in the proportions of from 2-};% to 12. by volume each of such methane and illuminating gas to the hydrogen constituent. The illuminating gas and the methane have nearly the same flame temperature as the hydrogen, and. the temperature produced by the combustion of the combined or mixed gases is nearly 3200 C. The illuminating gas is readily obtainable in many municipalities and the methane is the main constituent of natural gas. The gaseous mixture produces within the burning hydrogen a visible cone which enables the operator to adjust the proportions of the gases and of the combustiomsupporting oxygen as may be necessary, as well as to apply the flame in-the most advantageous manner to the work. Both the volume of the flame and the heat units produced by the combustion of the mixture are greater than are produced by the combustion of hydrogen alone; and as pointed out, the gaseous mixture ,is particularly well adapted for the cutting of metal with a minimum of slagging and with an extremely narrow slot, which results in the fineness of cutting referred to hereinbefore.

The following is an analysis of a typical illuminating gas such as has proven ad- Specification of Letters Patent.

Application filed December 26, 1919.

Patented Jan. 24, 1922.

Serial No. 347,464.

vantageous in admixture with methane (or natural gas) and hydrogen GO, 7 1.6 Illummants 4.0 Oxygen 0.4

8.5 Hydrogen 49.8

4 29.5 Nitrogen 3.2 C 1 1 3.2 B. T. U. 622 Cu. ft, of oxygen required for combustion of a cu. ft. of gas 1.09

According to Richards on Metallurgical Calculations, published in 1908, and with illuminating gas of approximately the analysis above set iforth, the flame tempera ture produced by the combustion of the above described gaseous mixture will be about 3200 C., and the variations in the percentages of the said gases will cause approximately the following variations in the net B. T. U. per cu. ft. of mixture and in the cubic feet of oxygen required for the combustion of a cubic foot of such mixture:

No. 1 mixture 95% H. with 2%% each of methane and illuminating gas; net B. T. U.s 319; cu. ft. of oxygen .552.

No. 2 mixture 75% H. with 121}% each of methane and illuminating gas; net B. T. U.s 419; cu. ft. of oxygen .762.

Having thus described our invention, what we claim is 1. A. gas for cutting, welding and heating purposes consisting of a mixture of methane and illuminating gas with hydrogen in the proportions of from 2}% to 12.1 by volume of each of methane and illuminating gas to hydrogen.

2. A gas for cutting, welding and heating purposes consisting of a mixture of illuminating gas and methane with hydrogen in proportions not substantially less than 5% by volume of such combined gases to the hydrogen and not materially more than 25% of such combined gases to the hydrogen, the illuminating gas and methane being present in the proportions of at least 2%% each in such mixture.

In testimony whereof, we hereunto affix 

